665
FNCA52 TJSJ 251930
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 PM AST THU JUN 25 2026
DISCUSSION
A FIRE DANGER STATEMENT HAS BEEN ISSUED FOR TODAY ACROSS PORTIONS
OF THE SOUTHERN COASTAL PLAINS OF PUERTO RICO FROM 10 AM THIS
MORNING TO 5 PM AST THIS AFTERNOON DUE TO THE COMBINATION OF
CRITICALLY DRY FUELS, SUSTAINED WINDS OF 15 TO 20 MPH WITH GUSTS
UP TO 30 MPH, AND MINIMUM RELATIVE HUMIDITY VALUES IN THE 40S AND
LOW 50S. MOISTURE FROM A TROPICAL WAVE CURRENTLY MOVING SOUTH OF
PUERTO RICO WILL CONTINUE TO BE DISPLACED BY DRIER AIR WITH HIGH
CONCENTRATIONS OF SAHARAN DUST AS THE DAY CONTINUES. PROLONGED
RAINFALL DEFICITS, ABNORMALLY DRY TO DROUGHT CONDITIONS, AND
CRITICALLY DRY FUELS ALSO CONTINUE. THESE CONDITIONS WILL FAVOR
RAPID WILDFIRE IGNITION AND EXTREME FIRE BEHAVIOR, MEANING ANY
FIRES THAT DEVELOP WILL LIKELY SPREAD QUICKLY AND BECOME
DIFFICULT TO CONTAIN. OUTDOOR BURNING IS HIGHLY DISCOURAGED.
PRZ014-260800-
SOUTHEAST COASTAL PLAINS-
330 PM AST THU JUN 25 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR
PRECIP TYPE NONE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 0 10 10 20
TEMP (24H TREND) 74 (-2) 91 (+1) 73 90
RH % (24H TREND) 85 (+2) 44 (-9) 87 46
WIND 20FT/EARLY(MPH) E 14 E 18 NE 16 E 13
WIND 20FT/LATE(MPH) NE 12 E 20 NE 8 SE 16
MIXING HGT(FT-AGL/MSL) 5010 5360
TRANSPORT WND (MPH) E 21 SE 14
VENT RATE (KT-FT) 90180 64320
DISPERSION 5 5
DSI 4 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ015-260800-
SOUTHERN HILLS-
330 PM AST THU JUN 25 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLEAR MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 0 20 10 30
TEMP (24H TREND) 70 (-4) 89 (+3) 69 87
RH % (24H TREND) 96 (+5) 55 (-9) 98 59
WIND 20FT/EARLY(MPH) E 13 E 14 NE 11 E 10
WIND 20FT/LATE(MPH) NE 13 E 16 NE 9 E 12
MIXING HGT(FT-AGL/MSL) 5290 5970
TRANSPORT WND (MPH) E 17 E 12
VENT RATE (KT-FT) 79350 59700
DISPERSION 5 5
DSI 3 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ016-260800-
NORTH COASTAL PLAINS-
330 PM AST THU JUN 25 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLEAR MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 10 10 30
TEMP (24H TREND) 74 (-2) 90 (+1) 73 89
RH % (24H TREND) 96 (+3) 60 (-5) 99 60
WIND 20FT/EARLY(MPH) E 19 E 17 E 18 E 11
WIND 20FT/LATE(MPH) E 13 E 20 E 13 E 16
MIXING HGT(FT-AGL/MSL) 4750 5100
TRANSPORT WND (MPH) E 20 E 13
VENT RATE (KT-FT) 80750 56100
DISPERSION 5 5
DSI 6 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ017-260800-
NORTHERN HILLS-
330 PM AST THU JUN 25 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLEAR MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 20 30 10 50
TEMP (24H TREND) 72 (-2) 89 (0) 70 88
RH % (24H TREND) 96 (+1) 60 (-3) 100 65
WIND 20FT/EARLY(MPH) E 17 E 16 E 16 E 10
WIND 20FT/LATE(MPH) E 11 NE 19 E 11 E 12
MIXING HGT(FT-AGL/MSL) 5690 6560
TRANSPORT WND (MPH) E 16 E 9
VENT RATE (KT-FT) 79660 52480
DISPERSION 5 5
DSI 4 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ018-260800-
WEST COAST-
330 PM AST THU JUN 25 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE NONE SHOWERS NONE TSTMS
CHANCE PRECIP (%) 0 40 0 60
TEMP (24H TREND) 73 (-2) 91 (0) 73 91
RH % (24H TREND) 95 (+3) 61 (-2) 98 60
WIND 20FT/EARLY(MPH) E 16 E 14 E 17 E 11
WIND 20FT/LATE(MPH) E 12 E 16 NE 14 E 12
MIXING HGT(FT-AGL/MSL) 4760 4970
TRANSPORT WND (MPH) E 10 SE 7
VENT RATE (KT-FT) 42840 29820
DISPERSION 5 5
DSI 4 6 3 5
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ019-260800-
EASTERN INTERIOR-
330 PM AST THU JUN 25 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 10 30 30
TEMP (24H TREND) 72 (-3) 89 (+3) 70 88
RH % (24H TREND) 97 (+3) 59 (-7) 98 59
WIND 20FT/EARLY(MPH) E 13 E 14 NE 11 E 10
WIND 20FT/LATE(MPH) E 13 E 13 E 9 E 12
MIXING HGT(FT-AGL/MSL) 5480 6530
TRANSPORT WND (MPH) E 17 SE 12
VENT RATE (KT-FT) 82200 65300
DISPERSION 5 5
DSI 4 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ022-260800-
LUQUILLO MOUNTAIN RANGE-
330 PM AST THU JUN 25 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 20 50 40
TEMP (24H TREND) 70 (-3) 84 (+3) 68 85
RH % (24H TREND) 99 (+2) 66 (-10) 100 65
WIND 20FT/EARLY(MPH) E 11 E 13 NE 10 E 9
WIND 20FT/LATE(MPH) E 11 E 11 E 6 E 10
MIXING HGT(FT-AGL/MSL) 4670 4970
TRANSPORT WND (MPH) E 18 SE 13
VENT RATE (KT-FT) 74720 54670
DISPERSION 5 5
DSI 6 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ023-260800-
CENTRAL MOUNTAIN RANGE-
330 PM AST THU JUN 25 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLEAR MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE SHOWERS NONE TSTMS
CHANCE PRECIP (%) 0 40 0 60
TEMP (24H TREND) 68 (-3) 88 (+4) 67 86
RH % (24H TREND) 96 (+2) 60 (-6) 99 66
WIND 20FT/EARLY(MPH) E 10 E 11 NE 11 E 8
WIND 20FT/LATE(MPH) E 9 E 12 NE 11 E 8
MIXING HGT(FT-AGL/MSL) 7390 7600
TRANSPORT WND (MPH) E 10 E 9
VENT RATE (KT-FT) 66510 60800
DISPERSION 5 5
DSI 2 6 2 5
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ024-260800-
CAYEY MOUNTAIN RANGE-
330 PM AST THU JUN 25 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 20 30
TEMP (24H TREND) 71 (-2) 85 (+3) 69 84
RH % (24H TREND) 99 (+1) 62 (-10) 100 65
WIND 20FT/EARLY(MPH) E 11 E 13 NE 10 E 9
WIND 20FT/LATE(MPH) E 11 E 13 NE 6 E 10
MIXING HGT(FT-AGL/MSL) 4860 5610
TRANSPORT WND (MPH) E 20 E 13
VENT RATE (KT-FT) 82620 61710
DISPERSION 5 5
DSI 4 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ025-260800-
VIEQUES-
330 PM AST THU JUN 25 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 40 40
TEMP (24H TREND) 76 (-2) 88 (0) 75 88
RH % (24H TREND) 89 (+1) 61 (-3) 90 59
WIND 20FT/EARLY(MPH) E 17 E 18 NE 13 E 11
WIND 20FT/LATE(MPH) E 17 E 14 E 12 E 11
MIXING HGT(FT-AGL/MSL) 4070 3680
TRANSPORT WND (MPH) E 20 SE 13
VENT RATE (KT-FT) 69190 40480
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ026-260800-
CULEBRA-
330 PM AST THU JUN 25 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 30 30
TEMP (24H TREND) 77 (-2) 89 (0) 76 90
RH % (24H TREND) 91 (+2) 60 (-6) 92 58
WIND 20FT/EARLY(MPH) E 17 E 17 NE 12 E 11
WIND 20FT/LATE(MPH) E 17 E 13 E 12 E 11
MIXING HGT(FT-AGL/MSL) 3950 3520
TRANSPORT WND (MPH) E 20 SE 14
VENT RATE (KT-FT) 67150 42240
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ027-260800-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 PM AST THU JUN 25 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR
PRECIP TYPE NONE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 0 40 0 30
TEMP (24H TREND) 74 (-3) 91 (+1) 73 92
RH % (24H TREND) 83 (+1) 47 (-7) 88 47
WIND 20FT/EARLY(MPH) E 21 E 20 E 14 E 14
WIND 20FT/LATE(MPH) E 13 SE 24 NE 13 SE 17
MIXING HGT(FT-AGL/MSL) 5070 4970
TRANSPORT WND (MPH) E 16 E 14
VENT RATE (KT-FT) 70980 59640
DISPERSION 5 5
DSI 5 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ001-260800-
SAINT THOMAS AND SAINT JOHN-
330 PM AST THU JUN 25 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 30 30
TEMP (24H TREND) 77 (-2) 86 (-1) 75 87
RH % (24H TREND) 90 (+2) 64 (-3) 92 63
WIND 20FT/EARLY(MPH) E 17 E 17 E 12 E 12
WIND 20FT/LATE(MPH) E 18 E 14 E 12 E 11
MIXING HGT(FT-AGL/MSL) 3750 3480
TRANSPORT WND (MPH) E 22 E 14
VENT RATE (KT-FT) 71250 41760
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ002-260800-
ST CROIX-
330 PM AST THU JUN 25 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLEAR MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 20 30
TEMP (24H TREND) 76 (-3) 87 (-1) 75 88
RH % (24H TREND) 91 (+2) 64 (-2) 91 62
WIND 20FT/EARLY(MPH) E 16 E 16 E 13 E 12
WIND 20FT/LATE(MPH) E 17 E 16 E 12 E 12
MIXING HGT(FT-AGL/MSL) 4710 5100
TRANSPORT WND (MPH) E 20 E 15
VENT RATE (KT-FT) 80070 66300
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
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